Slip Rings

PRG - 90 Series

PRG-90

Ravioli Slip Ring Type PRG – provided without housing – is available in a large number of different versions and executions from 90mm to 350mm diameter. This specific feature allows the users to avail themselves of a wide internal passage combined with a nominal voltage which goes from a few tens to some hundreds Amperes.
Blade or copper-graphite or silver-graphite brushes for signals are available, executions range from 4 to 36 rings 20/30/50/80/120/200 A.

This Ravioli Slip Ring PRG is specifically suitable for applications that requires high voltages and optional central passages for tubes, wires or metallic shafts.

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Main Features


  • Execution Without housing. It is necessary that housing has to be realized by end user according to the armonized rules to ensure an appropriate protection
  • Positioning Vertical axis
  • Inside passage 42mm diameter trough steel pipe for the passage of cable, hoist rope, hydraulic pipes or piston shaft.
  • Connections Directly on the terminal box for the rings and on the brush-holders clamps.
  • Brushes 50 A blade or copper-graphite
  • Executions From 4 to 14 rings 50 A

Electrical Features


  • Rated Voltage 660 V ac - dc
  • Rated Current Ith 50 A
  • Degree protection IP 00
  • Maximum speed 30 rpm
  • Test Voltage 2,5 kV
  • Operating Temperature - 20 °C + 60 °C

Regulations


EC:
  • 2014/35/UE
  • 2014/30/UE
  • 2006/42/CE
  • RoHS 2011/65/UE

Rules:
  • CEI EN 60947-5-1
  • CEI EN 60529

Standard Executions


50A
Items No. Rings H-mm F-mm G-mm P-mm
G G90D4L 4 210 189 49 80
G G90D6L 6 250 235 49 120
G G90D8L 8 280 281 39 160
G G90D10L 10 330 304 49 200
G G90D12L 12 370 350 49 240
G G90D14L 14 400 396 39 280
For cooper-graphite executions the code is without the final letter 'L'.

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